Producing a smooth, highly polished finish
to the gel coats on glass fibre hulls is desirable for any boat owner,
from racers looking for those final fractions of a knot to the leisure
owner seeking to preserve that boatyard shine. Unfortunately, most
commercially available polishes are designed for hard automotive
finishes, making them unnecessarily harsh for fine GRP hulls.
Now, global innovations company 3M has
developed a new system of polishing compounds specifically formulated to
provide the optimum finish on marine production gel coats. At the heart
of the new system is 3M Marine Imperial Compound and Finishing Material.
Designed by materials scientists at 3M,
using abrasives that have been engineered to match the hardness of
commercial marine gel coats, the product can be applied after sanding,
using a wool pad, to remove grade P600 or finer sand scratch marks and
gel coat oxidisation quickly and easily, leaving a high quality finish
with no swirl or scratch marks.
3M Marine Imperial Compound contains no wax
or silicone and has been optimised for machine application with air or
electric buffers operating at 1500 to 2500 rpm. It can also be applied
by hand using a soft cloth.